From: Logan Gunthorpe Date: Mon, 6 Jan 2020 19:03:27 +0000 (-0700) Subject: PCI/switchtec: Fix vep_vector_number ioread width X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9375646b4cf03aee81bc6c305aa18cc80b682796;p=linux.git PCI/switchtec: Fix vep_vector_number ioread width vep_vector_number is actually a 16 bit register which should be read with ioread16() instead of ioread32(). Fixes: 080b47def5e5 ("MicroSemi Switchtec management interface driver") Link: https://lore.kernel.org/r/20200106190337.2428-3-logang@deltatee.com Reported-by: Doug Meyer Signed-off-by: Logan Gunthorpe Signed-off-by: Bjorn Helgaas --- diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index 2bf670977b9c5..9c3ad09d30222 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -1276,7 +1276,7 @@ static int switchtec_init_isr(struct switchtec_dev *stdev) if (nvecs < 0) return nvecs; - event_irq = ioread32(&stdev->mmio_part_cfg->vep_vector_number); + event_irq = ioread16(&stdev->mmio_part_cfg->vep_vector_number); if (event_irq < 0 || event_irq >= nvecs) return -EFAULT;